Digital Products / Tutanota Calendar

Tutanota Calendar

Tuta Calendar is a zero-knowledge, end-to-end encrypted calendar service that keeps your events private and secure across devices, integrated with Tuta Mail.

🇩🇪
EU Based EU Hosted EU Owned
#zero-knowledge #encryption #calendar #calendar-apps #end-to-end-encryption #quantum-safe #privacy #open-source #Germany #GDPR #privacy-by-design #offline-search #calendar-sharing
Visit Website

About Tutanota Calendar

Tuta Calendar is a zero-knowledge calendar with quantum-safe end-to-end encryption designed to keep your events private. All calendar data, reminders, and invitations are encrypted so you own your information, with seamless integration into Tuta Mail for a private, unified workflow across web, desktop, and mobile. It offers open-source desktop clients, multi-user sharing, and secure notifications to help individuals and teams stay organized without compromising privacy.

Key features

  • End-to-end encrypted calendar (zero-knowledge) with quantum-safe cryptography
  • Encrypted reminders and event invitations
  • Cross-device syncing and push notifications that preserve privacy
  • Two-factor authentication for secure logins
  • Free open-source desktop clients for Windows, macOS, and Linux
  • Multi-user sharing with configurable access rights
  • Seamless integration with Tuta Mail (calendar, email, contacts)
  • Local search on iOS, Android, and desktop apps, even offline
  • Integrated with private calendar management within a privacy-first ecosystem

Why choose Tutanota Calendar?

  • Privacy-first design with zero-knowledge, end-to-end encryption that ensures only you can decrypt and access calendar data
  • Quantum-safe, post-quantum cryptography by default for future-proof security
  • Data stored in Germany with GDPR compliance and ISO 27001-certified data centers
  • Fully open-source desktop clients for transparency and security auditing
  • Seamless integration with other Tuta tools (Mail and Contacts) for a unified private workflow
  • Supports personal use and business collaboration with secure sharing while preserving privacy

Pricing

Personal plans (Tuta Mail) for calendar usage:

  • Free: €0/month – 1 GB storage, 1 calendar, 3 labels, basic features
  • Revolutionary: €3/month – 20 GB storage, unlimited calendars, unlimited labels, 15 extra email addresses, 3 custom domains
  • Legend: €8/month – 500 GB storage, unlimited calendars, unlimited labels, 30 extra email addresses, unlimited custom domains

Family option available to activate multi-user support per member.

Business plans (per user per month):

  • Essential: €6/user/month
  • Advanced: €8/user/month
  • Unlimited: €12/user/month Each includes increasing storage, calendars, labels, custom domains, and business features